Aircraft design

MATLAB cost-function based algorithms for constraint analysis and descent, level, and climb performance analysis. Aerodynamic characteristics obtained with the APM solver (https://apm.aviumtechnologies.com/). Viscous corrections obtained via CFD with the SU2 solver.

Constraint analysis showing required power and wing loading (design point). Note that the constraint analysis are frequently updated during the design phase to check if the original design point is still in the design space.

Iteration history of the thrust and the roll, pitch, and yaw control required for a level flight. Note that the roll, pitch, and yaw control are fed into a mixing matrix that gives the aicraft control surface deflections.

Trim and climb and descend curves of the aicraft at different airspeeds.

Output from the MATLAB cost-function based performance algorithm.
Trimming using cost function...Done!

J=2.5453e-16
Angle of attack:1.4898 deg 
Angle of sideslip:0.0000 deg 
Roll control:0.0013 - 
Pitch control:0.0365 - 
Yaw control:-0.0032 - 
Left aileron:0.0193 deg 
Right aileron:-0.0193 deg 
Left elevator:1.0477 deg 
Right elevator:1.1428 deg 
Thrust:9.1633 kg
Roll angle correction:-0.07122514 deg 
Roll angle (w. correction):-0.07122513 deg 

Fb={0.0000,0.0000,0.0000}
Mb={-0.0000,-0.0000,-0.0000}

Trimming at V_ref=10.0000 m/s...Done! J=6.8091e-17
Trimming at V_ref=10.5000 m/s...Done! J=1.4815e-16
Trimming at V_ref=11.0000 m/s...Done! J=1.2694e-16
Trimming at V_ref=11.5000 m/s...Done! J=3.4841e-17
Trimming at V_ref=12.0000 m/s...Done! J=1.1927e-16
Trimming at V_ref=12.5000 m/s...Done! J=5.8089e-17
Trimming at V_ref=13.0000 m/s...Done! J=1.6112e-16
Trimming at V_ref=13.5000 m/s...Done! J=5.5232e-17
Trimming at V_ref=14.0000 m/s...Done! J=5.5694e-17
Trimming at V_ref=14.5000 m/s...Done! J=3.8616e-17
Trimming at V_ref=15.0000 m/s...Done! J=1.1597e-16
Trimming at V_ref=15.5000 m/s...Done! J=7.9713e-17
Trimming at V_ref=16.0000 m/s...Done! J=8.8532e-17
Trimming at V_ref=16.5000 m/s...Done! J=3.1696e-17
Trimming at V_ref=17.0000 m/s...Done! J=7.8708e-17
Trimming at V_ref=17.5000 m/s...Done! J=5.8015e-17
Trimming at V_ref=18.0000 m/s...Done! J=3.5814e-17
Trimming at V_ref=18.5000 m/s...Done! J=4.8818e-17
Trimming at V_ref=19.0000 m/s...Done! J=1.1405e-16
Trimming at V_ref=19.5000 m/s...Done! J=4.7667e-17
Trimming at V_ref=20.0000 m/s...Done! J=6.0700e-17
Trimming at V_ref=20.5000 m/s...Done! J=3.3671e-16
Trimming at V_ref=21.0000 m/s...Done! J=6.9103e-17
Trimming at V_ref=21.5000 m/s...Done! J=9.6065e-17
Trimming at V_ref=22.0000 m/s...Done! J=1.0114e-16
Trimming at V_ref=22.5000 m/s...Done! J=1.4319e-16
Trimming at V_ref=23.0000 m/s...Done! J=1.0625e-15
Trimming at V_ref=23.5000 m/s...Done! J=6.4742e-17
Trimming at V_ref=24.0000 m/s...Done! J=1.4606e-16
Trimming at V_ref=24.5000 m/s...Done! J=1.0321e-16
Trimming at V_ref=25.0000 m/s...Done! J=2.5453e-16
Trimming at V_ref=25.5000 m/s...Done! J=5.4998e-17
Trimming at V_ref=26.0000 m/s...Done! J=1.2159e-16
Trimming at V_ref=26.5000 m/s...Done! J=1.4954e-16
Trimming at V_ref=27.0000 m/s...Done! J=2.2338e-16
Trimming at V_ref=27.5000 m/s...Done! J=4.2133e-17
Trimming at V_ref=28.0000 m/s...Done! J=1.3024e-16
Trimming at V_ref=28.5000 m/s...Done! J=2.0189e-16
Trimming at V_ref=29.0000 m/s...Done! J=8.4032e-17
Trimming at V_ref=29.5000 m/s...Done! J=6.3744e-17
Trimming at V_ref=30.0000 m/s...Done! J=4.3626e-17
Trimming at V_ref=30.5000 m/s...Done! J=6.2719e-17
Trimming at V_ref=31.0000 m/s...Done! J=4.6993e-16
Trimming at V_ref=31.5000 m/s...Done! J=2.6426e-16
Trimming at V_ref=32.0000 m/s...Done! J=8.1183e-17
Trimming at V_ref=32.5000 m/s...Done! J=1.8843e-16
Trimming at V_ref=33.0000 m/s...Done! J=1.5684e-16
Trimming at V_ref=33.5000 m/s...Done! J=9.7059e-17
Trimming at V_ref=34.0000 m/s...Done! J=6.3655e-17
Trimming at V_ref=34.5000 m/s...Done! J=5.5037e-17
Trimming at V_ref=35.0000 m/s...Done! J=1.1666e-16
Trimming at V_ref=35.5000 m/s...Done! J=1.2724e-16
Trimming at V_ref=36.0000 m/s...Done! J=8.6628e-17
Trimming at V_ref=36.5000 m/s...Done! J=3.7049e-17
Trimming at V_ref=37.0000 m/s...Done! J=5.7650e-17
Trimming at V_ref=37.5000 m/s...Done! J=2.8854e-17
Trimming at V_ref=38.0000 m/s...Done! J=1.1230e-16
Trimming at V_ref=38.5000 m/s...Done! J=8.6419e-17
Trimming at V_ref=39.0000 m/s...Done! J=1.6945e-16
Trimming at V_ref=39.5000 m/s...Done! J=2.8273e-16
Trimming at V_ref=40.0000 m/s...Done! J=1.6490e-16

CL_max:1.6000
V_at_CL_max:16.4209 m/s
CLCD_max:22.5707
V_at_CLCD_max:23.5000 m/s
CD0:0.0321
CL_at_CD0:0.6635
k:0.1768

P_required_min:199.1305 W
V_at_P_required_min:22.5000 m/s

P_required_at_D_min:204.2086 W
V_at_D_min:23.5000 m/s

P_excess_max:591.0246 W
V_at_P_excess_max:23.5000 m/s

gamma_max (descend):-2.5368 deg
V_at_gamma_max (descend):23.5000 m/s
h_dot_at_gamma_max (descend):-1.0402 m/s

gamma_max (climb):7.6462 deg
V_at_gamma_max (climb):21.5000 m/s
h_dot_at_gamma_max (descend):2.8607 m/s

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